Made room in the hut (took the MET rack apart). The MET controls box and the O3 instrument are now on top of the fast NOx/O3 systems. That’s the best option I could come up with.
We successfully crossed the lake with the PTR-TOF-MS. The instrument is now in the flux hut and Catie is working on it.
We pulled a sample line through the Arctic pipe for the PTR-TOF-MS. ST1 and ST2 lines are out of the pipe.
Question for Detlev: On the picture below, the filter on the left is ours (fast O3/NOx systems), the one on the right is for the PTR-TOF-MS. Do you think they are too close to each other or that their inlet might interfere with ours? I just want to make sure that this setup is okay.
Catastrophe! While slightly moving the NPL tank, a short-circuit happened. I saw sparks and the GC/MS stopped. Everything that was connected to CKT 10 stopped. Strange thing, the fast NOx instrument stopped as well (at least the UPS + fan of H20 pump + laptop). NO flow on fast O3 instrument dropped to 0. I think the line between the NPL tank and the GC/MS touched CKT 10 and that’s how everything happened (see pics below). Jacques and I disconnected everything (computer, GC/MS, UPS) from CKT 10 and connected to CKT 17 instead. GC/MS restarted, fast NOx as well. We will check tomorrow that everything is indeed okay.
The NO flow dropping to 0 on the fast O3 has actually nothing to do with the short-circuit. The needle valve was not sufficiently open. Problem fixed. Keep an eye on this NO flow to make sure it doesn’t drop to 0 again.
Pics of the NPL tank line, CKT 10 and floor below CKT 10.